SAT® Subject Test in Physics

Loop Moving in Magnetic Field

SATPHY-FS4JC1

The diagram below shows a retangular wire loop moving at a constant velocity in the direction of the red arrow. The loop is entirely in the uniform magnetic field pictured, and it stays entirely in the field. The magnetic field is represented by the blue dots which show that the magnetic field points out of the page.

As the loop continues to move in the magnetic field, what happens in the wire loop?

A

Conventional current flows around the wire loop in a clockwise direction and has a constant value.

B

Conventional current flows around the wire loop in a clockwise direction and increases in value as the loop moves further into the magnetic field.

C

Conventional current flows around the wire loop in a counter-clockwise direction and has a constant value.

D

Conventional current flows around the wire loop in a counter-clockwise direction and increases in value as the loop moves further into the magnetic field.